A.Orange
B.White
C.Red
D.Alternating yellow and white
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A.Three
B.Two
C.One
D.None
A.the lines of force cross the equator on a 0°-180°alignment
B.the quadrantal error is 0°
C.there is no vertical component of the Earth's magnetic field
D.the intercardinal headings have less than 1°
A.buoys close at hand
B.fixed known objects on shore
C.buoys at a distance
D.All of the above
A.running fix
B.fix
C.estimated position
D.assumed position
A.true north
B.magnetic north
C.the vessel's beam
D.the vessel's head
最新試題
Which position includes the effects of wind and current（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
How would you pass a red buoy in the maritime buoyage system“A” （）.
Which buoy will NOT display white retro reflective material（）.
Which statement concerning current is TRUE（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.